Earth-anchor.



C. R, HEBER. .EARTH ANcHoR. l APPLICATION FILED AUG. 7, 1913.

Lmm y Patented @11.51915 @www eH-ns'rnn n. incarna, or emessa, wrseonsrn.

Baarn-anonce.

My invention relates to earth anchors and` lhas a number of objects and advantages 1n view.

The invention has for one of its objects the provision of al construction including an anchor rod and anchor blades in association therewith, between which rods and blades there need be no rotation in order to spread the blades into the earth. lln

practicing this feature of the invention the.

anchor rod carries a spreader at its lower end which cooperates with neither faces of the blades when the' tops of the blades are impinged upon by a suitable tamping tool. ln the preferred embodiment of the invention the anchor blades are articulated at the rod, each blade being provided with a pair of trunnion extensions for this purpose, the anchor rod so passing through spacings afforded between these trunnion extensions as to maintain the articulation.

Interlocking means vare provided for maintaining the blades in their spread apart relation, such interlocking means preferably including, as one portion thereof, a spreader carried upon the lower end of the anchor rod and, as another portion, notched or recessed parts formed in the nether surfaces of the anchor blades, the desired interlocking engagement being secured when the blades have been sufficiently spread apart for the purpose of securing the anchor in position, a return of the blades to their folded relation thereafter being revented by the interlocking action. This eature of the invention is not to be limited to the construction above described nor to the preferred form of earth anchors in which there is no necessary relative rotary motion between the anchor rod and anchor blades.

My invention has other characteristics and will be explained fully by reference to the accompanying drawing in which- Figure l is a side view of the earth anchor of my invention, the position of the blades before they are spaced apart being shown in l Speccaton of Letters Patent. Application led August 7, 1913. serial No. 733543,

Patented dan.,` d, ttd,

lfull lines and their position after being spread apart being shown in dotted lines; Fig. 2 isa view of the structure as it appears in full lines in Fig. 1, but taken at right angles to the direction in which Fig. lis taken; Fig. 3 is a sectional view on line 3-3 of Fig. 1 of that portion of the structure where the blades are articulated together Fig. l is a `plan view of the central portion of the blade structure with the anchoring stem in section; Vand Fig. 5 is a perspective view illustrating a preferred structural characteristic where the blades of the anchor are articulated.

Like'parts are indicated by similar characters of reference throughout thediderent iigures.

rlhe anchor rod a is preferably in threaded connection with the spreader b shown in,

the form of a ilatdisk. The earth penetrating blades c are symmetrically formed. An inwardly extending trunnion extension d on each blade carries an insetting trunnion pin e which passes through a trunnion extension d on the other blade, the trunnion extensions on each blade being interleaved or alternating with theltrunnio'n extensions on the other. Sucient spacing intervenes between the two inner trunnion extensions al (on dierent blades) to permit the anchor rod a' to pass between them, though such spacing is suiiciently narrow to enable the anchor rod to keep the extensions d on the pins e. Thus the anchor rod acts as a holding device the blades whereby any special device for this purpose need not be employed. rllhe blades and the lower end of the anchor rod are inserted in a prepared hole in the earth in the collapsed position indicated in full lines in Figs. 1 and 2 whereafter a bifurcated tamping tool is applied to the top portions of the trunnion extensions to force the blades to ride over the spreader b whereby said blades are projected laterally (as indicated by dotted lines in the power part of Fig. 1) into the surrounding earth. The spreader b finally enters notches provided in the opposing or bottom faces o the blades c c to lock the blades apart. i.

Each blade may have an insetting extension g spread apart at recess h from the trunnion extension d carried. by the blade having such extension, this recess receiving trunnion extension d of the, companion blade whereby articulation of the blades to maintain the articulation ofv may be maintained independently of the anchor rod. Each trunnion extension is reduced in diameter at i so that when the blades are sufficiently folded back from the position illustrated in Fig. l the blades may be separated. j

While ll have herein shown and particularly described the preferred embodiment of my invention I do not Wish to be limited to the precise details of construction shown as changes may readily be made Without de parting from the spirit of my invention.

aving thus described my invention I claim as new and desire to secure by Letters Patent the following :k v

l. An earth anchor` including a pair 0f anchor blades 'articulated at adjacent inner ends to enable them to be spread apart from collapsed position; an anchor rod passing freely through spacing provided between the anchor blades where articulated to permit tamping of the blades; and a spreader provided at the lower end of the anchor rod, the nether faces of the anchor blades being shaped to coperate with the spreader whereby the blades will be laterally projected into the earth when the articulated portions of the blades are tamped, there being notches ,f in opposing or bottom faces of the blades which are engaged by the spreader when the blades are spread apartto hold the blades apart.

p 2. An earth anchor including a pair of anchor blades articulated at adjacent inner ends where the blades are provided each with a pair of trunnion extensions, the trunnion extensions of each blade being interleaved with the trunnion extensions of the other, both blades having each a recess it for receiving the two inner trunnion extensions carried by the blades to maintain the articulation of the blades.

3. An earth anchor including a pair of anchor blades articulated at adjacent inner ends Where the blades are provided each with a pair of trunnion extensions, the trunnion extensions of each blade being interleaved with the trunnion extensions of the other; an anchor rod element passing through spacing provided between the two innertrunnion extensions that project from the two blades, said anchor rod element and spacing being so proportioned as to enable the anchor rod element to maintain the articulation between the anchor blades; and means for maintaining such articulation independently of. the anchor rod when the -blades are spread apart.

4. An earth anchor including a pair of anchor blades articulated at adjacent inner ends Where the blades are provided each with a pair o f trunnion extensions,'tl1e trunnion extensions of each blade being interleaved with the trunnion extensions of the other; and means interposed between the two inner trunnion extensions for maintaining the articulation between the blades.

In witness whereof; l hereunto subscribe my name this fourth day of August A. D.,

CHESTER R. PI'EPER. Witnesses:

J. H. BATES, @scan Wosrar. 

